# Chapter 3: Elementary Data Structures

- [x] [3.1 ▷](./ex.3.1.cpp)
- [x] [3.2](./ex.3.2.md)
- [x] [3.3](./ex.3.3.md)
- [x] [3.4 ○](./ex.3.4.md)
- [x] [3.5](./ex.3.5.md)
- [x] [3.6](./ex.3.6.cpp)
- [x] [3.7](./ex.3.7.cpp)
- [x] [3.8 ●](./ex.3.8.cpp)
- [x] [3.9 ●](./ex.3.9.cpp)
- [x] [3.10 ▷](./ex.3.10.md)
- [x] [3.11](./ex.3.11.md)
- [x] [3.12 ▷](./ex.3.12.md)
- [x] [3.13 ○](./ex.3.13.md)
- [x] [3.14 ○](./ex.3.14.md)
- [x] [3.15 ●](./ex.3.15.md)
- [x] [3.16 ▷](./ex.3.16.cpp)
- [x] [3.17 ○](./ex.3.17.cpp)
- [x] [3.18 ○](./ex.3.18.cpp)
- [x] [3.19](./ex.3.19.cpp)
- [x] [3.20](./ex.3.20.cpp)
- [x] [3.21 ○](./ex.3.21.cpp)
- [x] [3.22 ●](./ex.3.22.cpp)
- [x] [3.23 ▷](./ex.3.23.cpp)
- [x] [3.24](./ex.3.24.cpp)
- [ ] 3.25
- [x] [3.26 ●](./ex.3.26.cpp)
- [x] [3.27](./ex.3.27.cpp)
- [x] [3.28](./ex.3.28.md)
- [x] [3.29](./ex.3.29.md)
- [x] [3.30](./ex.3.30.md)
- [x] [3.31 ○](./ex.3.31.md)
- [x] [3.32](./ex.3.32.cpp)
- [x] [3.33 ▷](./ex.3.33.cpp)
- [x] [3.34](./ex.3.34.cpp)
- [ ] 3.35
- [x] [3.36](./ex.3.36.cpp)
- [x] [3.37 ○](./ex.3.37.cpp)
- [x] [3.38](./ex.3.38.cpp)
- [x] [3.39](./ex.3.39.cpp)
- [x] [3.40](./ex.3.40.cpp)
- [x] [3.41](./ex.3.41.cpp)
- [x] [3.42](./ex.3.42.cpp)
- [ ] 3.43
- [ ] 3.44 ○
- [ ] 3.45
- [x] [3.46 ○](./ex.3.46.cpp)
- [x] [3.47](./ex.3.47.cpp)
- [x] [3.48 ○](./ex.3.48.cpp)
- [x] [3.49](./ex.3.49.cpp)
- [x] [3.50](./ex.3.50.md)
- [ ] 3.51
- [ ] 3.52 ○
- [ ] 3.53 ●
- [ ] 3.54 ●●
- [x] [3.55 ▷](./ex.3.55.cpp)
- [x] [3.56 ▷](./ex.3.56.cpp)
- [x] [3.57](./ex.3.57.cpp)
- [x] [3.58](./ex.3.58.cpp)
- [ ] 3.59
- [ ] 3.60
- [ ] 3.61 ○
- [x] [3.62](./ex.3.62.cpp)
- [x] [3.63](./ex.3.63.cpp)
- [x] [3.64](./ex.3.64.cpp)
- [ ] 3.65
- [x] [3.66](./ex.3.66.cpp)
- [ ] 3.67 ●
- [x] [3.68 ▷](./ex.3.68.md)
- [x] [3.69 ▷](./ex.3.69.md)
- [ ] 3.70 ○
- [x] [3.71](./ex.3.71.cpp)
- [x] [3.72](./ex.3.72.cpp)
- [ ] 3.73 ○
- [ ] 3.74 ○
